Detail of "75-74-1"

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CAS Number:
75-74-1
Name:
Plumbane, tetramethyl-
Superlist Name:
Tetramethyllead
Molecular Structure:
Formula:
C4H12 Pb
Molecular Weight:
267.35
Synonyms:
Lead,tetramethyl- (6CI,7CI); Tetramethyllead; Tetramethylplumbane
EINECS:
200-897-0
Melting Point:
-27.5 ºC
Boiling Point:
110 ºC
Flash Point:
37.7 ºC
Solubility:
insoluble
Appearance:
colourless liquid
Hazard Symbols:
Flammable, moderate fire risk. Toxic by ingestion, inhalation, and skin absorption. Lower explosion level 1.8%. TLV: 0.15 mg(Pb)/m³. Toxic by skin absorption.
Safety:
Poison by ingestion, intraperitoneal, parenteral, and intravenous routes. Moderately toxic by skin contact. An experimental teratogen. Experimental reproductive effects. Lead and its compounds have dangerous central nervous system effects. A flammable liquid and very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard in the form of vapor when exposed to flame. May explode when heated above 90°C. Explosive reaction with tetrachlorotrifluoromethyl phosphorane. Can react vigorously with oxidizing materials. To fight fire, use water, foam, CO₂, dry chemical. When heated to decomposition it emits toxic fumes of Pb. Used as an octane enhancer for gasoline. See also LEAD COMPOUNDS.
Analytical Methods:

For occupational chemical analysis use NIOSH: Tetramethyl Lead (as Pb), 2534. Details
Transport Information:
UN 1649

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Chromatographic separation of lead species and post column chemical reaction detection: Chromatographic separation of lead species and post column chemical reaction detection. Blaszkewicz, M.; Baumhoer, G.; Neidhart, B. (Inst. Arbeitsphysiol., Univ. Dortmund, Dortmund D-4600/1, Fed. Rep. Ger.). Heavy Met. Environ., Int. Conf., 4th, Volume 1, 99-102. CEP Consult.: Edinburgh, UK. (English) 1983. CODEN: 51UDAB. DOCUMENT TYPE: Conference CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 An anal. procedure for the detn. of organolead compds. in air uses a chromatog. sepn. system (RP-HPLC) and a spectrophotometric chem. reaction detector. Diorganolead salts and Pb(II) form red, water-sol. complexes at pH 9-10 with 4-(2-pyridylazo)-resorcinol [16566-56-6], whereas tetraakyllead and trialkyllead salts do not. The latter 2 groups of compds. are decompd. in the chem. reaction system by I. The sepn. of Pb2+, Me3Pb+ [7442-13-9], Et3Pb+ [5224-23-7], Me4Pb [75-74-1], and Et4Pb [78-00-2] can be obtained in <50 min in the detection range 0.3-1.5 nmol (abs.).

Determination of tetraalkyllead compounds in gasoline by a chromatographic-atomic absorption method: Determination of tetraalkyllead compounds in gasoline by a chromatographic-atomic absorption method. Bykhovskii, M. Ya.; Braude, A. Yu.; Gorovoi, B. M.; Katsis, L. F. (Vses. Nauchno-Issled. Inst. Khrom., USSR). Khim. Tekhnol. Topl. Masel, (5), 34-5 (Russian) 1984. CODEN: KTPMAG. ISSN: 0023-1169. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 80 Gas chromatog. (2000 mm column contg. Carbowax 20M on Chromaton at 130° and He gas flow at 60 mL/min) combined with at. absorption spectrometry was used for the rapid (￡15 min) detn. of PbEt4 [78-00-2] and PbMe4 [75-74-1] in gasolines. The detection limits for PbEt4 and PbMe4 were 10-5 and 2.5 ′ 10-6%, resp., with ±5% std. deviation.